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(No Model.) 3 Sheets-Sheet 2.

C. SINTZ'.

GAS ENGINE.

No. 339,225. Patented Apr. 6, 1886.

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(No Model.) 3 Sheets-Sheet 3.

C. SINTZ.

' GAS ENGINE.

No. 339,225. Patented Apr. 6, 1886.

WITNESSES INVENTOR p2-iva, Y Mwvr.

01 .dttorrwyst PATENT OFFICE.

CLARK SINTZ, OF SPRINGFIELD, OHIO.

GAS-ENGINE.

PECIFICATION forming part of Letters Patent No. 339,225, dated April6,1886.

Application tiled January 13, i886. Serial No. 193,306. (Xo model.)

T0 @ZZ whom it may concern:

Be it known that I, CLARK Siivrz, a citizen of the United States,residing at Springfield, in the countyof Clark and State of Ohio, haveinvented certain new and useful Improvements in Gas-Engines, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

This invention relates to improvements in that class of engines in whichtbem'otive power is derived from some explosive agent, as air carburetedwith gasoline or illuminating-gas mixed with the proper proportion ofatmospheric air; and it has for its objects, first, to so organize theengine that the necessity ofthe usual mixing-chamber shall be entirelyavoided, and a charging and power cylinder so constructed and arrangedthat the explosive can be directly conducted by the chargingcylinderinto the power-cylinder; second, to provide a mixing-valve-that is tosay, a valve for the admission of the explosive into thecharging-cylinder-of such construction that the relative proportions ofthe constituents of the explosive agent can be varied from the smallestquantity of either above zero (0) to one hundred per centum--that is,that one hundred per centum of one constituent may be admitted throughthe valve, and none of the other constituent, or any per centum lessthan one hundred of one constituent and such per centum ofthe other aswill correspond with the increase or reduction of the first; third, toprovide an explosive-valve of such construction that the explosive maybe ignited outside of the cylinder, and an ignited quantity thereof beconducted into communication with the explosive contained in thepowercylinder by the valve; fourth, to provide such an arrangementbetween the crank and connecting-rods that the piston in the'chargingcylinder will make its upward stroke and begin its return bythe time the piston in the power cylinder reaches its upward limit,though both are connected with the same crank, for a purpose which willhereinafter appear; fth, to provide means for generating an explosiveagent by the operationof the engine4 itself and during the time ofoperation only, the explosive being conducted to the inletvalves of thecharging-cylinder as it is generated, the result of which is that theexpense of production is stopped when the engine is stopped, and theliability of leakage of the explosive during the time t-he engine isstanding avoided. p

In the accompanying drawings, forming a part of this specification, andon which like reference-letters indicate corresponding parts, Figurelrepresents a vertical sectional View of my improved engine, taken on theline x .r of Fig. 2, and showing some of the parts in elevation; Fig. 2,a vertical sectional view taken on the line y y of Fig. l, showing thepower-cylinder and some of the other features in side elevation; Fig. 3,a side view oi' the engine, having the lower portion removed, andshowing the exploding valve and the water and igniting pumps in verticalsection; Fig. 4, a horizontal sectional view ofthe power and chargingcylinder; Fig. 5, a detached vertical sectional view ot' themixing-valve, showing the cut-ofi' in position for the admission of gasand atmospheric air; and Fig. 6 alike section of the exploding-valve,showing the position of the slide when t-he explosive is being ignited.

The letter A designates a metallic tank, constituting a receptacle for aquant-ity of gasoline, from which to generate one form of explosiveagent, and the letter B a perforated pipe extending into the tank at oneend, C, and provided at the outer end with a suitable valve, D, adaptedto open for the admission of atmospheric air into the pipe B, and toprevent the escape of the same by automatically closing itself.

The object in perforating the pipe is to admit of the atmospheric airbeing drawn through it and into and through the gasoline containedwithin the tank A in the manner which will hereinafter appear, wherebythe air is carbureted and made to partake of the combustible qualitiesinherent in the gasoline, so as to be capable of supporting combustion.

Upon the tank is mounted asuitable framelike structure, E, of cast-iron,provided with suitable journal-boxes, F, in which the engineshaft Gisjonrnaled. rlhis shaft is provided at one end with a balance-wheel,H,whose hub carries a cam, I, the eccentric periphery of which actuatesthe mixing valve, as will ap- IOO pear farther on. The said shaft Gisalso provided with an eccentric, J, at its other end, upon which ismounted an actuating-arm, K, an eye being formed therein for the purposeof receiving and riding upon the eccentric. The upper end of this arm Kis pivotally connected with the frame E by a link, L, and when the shaftG is in rotation the arm is given a reciprocating motion, as well in avertical plane as in a horizontal plane, the former movement serving toactuate the explodingvalve and the latter to actuate two pumps, thefunction of which will also appear presently. The shaft G is furtherprovided with a crank, M, vto which are connected the connecting-rods ofthe power and charging cylinder pistons.

ure in the power-cylinder, and -to also reduce the clearance-space, andto obtain the results ofincreased expansion. This reduction in .theterminal pressure brings about corresponding reduction of the noiseoccasioned by the exhaust. vAround the power-cylinder is an annularspace, P, forming a water-jacket for keeping that cylinder from becomingtoo hot. Itis also provided with a series of openings, Q, which formexhaust-ports, and which discharge into an annular space, R, divided offfrom the water-jacket P by the walls S, and

opening externally at T, as shown in Figs. 2 and 4. These two cylindersare mounted upon and irmly'secured to thc upper por-tion of the frame E.To the charging-cylinder O is attached the shell or casing U of themixingvalve,(oritmaybecast with the cylinder-head,) and this shell isprovided with a port,V, leading into an annular internal recess, for thepurpose of allowing a free iniiux of atmos,`

pheric air into the interior of the shell, and thence to thecharging-cylinder, when the cutoff XV is adjusted for that purpose. Theshell is also provided with an elbow, X,which coinmunicates with itsinterior through a second port, Y, and its annular space.

The letter Z designates the tubular cut-off of the mixing-valve, thesame being snugly fitted into the shell U, and having the ports a, whichact in conjunction with the port V and its annular space, for theintroduction of air, and the ports b,which act in conjunction with theport Y and its annular space, for the introduction of carbureted air, orthe introduction of gas. A pipe, c, establishes communication betweenthe tank and the elbow X,

whereby when the piston of the charging-cylinderis making its downwardstroke a pumplike action is induced, and the air is drawn ton will be-atits upper dead-point.

through the pipe Band the gasoline in the tank A and Carried up to themixing-valve.

Thecut-oft W is automatically actuated to and fro by means of the stemd, secured to it and riding at its lower end upon' the cam I. Vhen theconcentric portion of the cam I is opposite the stem d, the stem drops,bringing the valve cut-ofi' with it, a jam-nut, e, being .fitted to thestem to prevent the stem from .unscrewing from the cut-oft. A bracket,f,

`for this purpose, being easily overcome by the incoming explosiveagent. Vhen the charging-cylinder piston is making an upward stroke, thevalve h instantly closes and leaves the only escape of the explosiveagent through the oriiicej, in which is fitted a valve, k, and throughwhich and the short passage Z the explosive finds its way to the powercylinder N.

The remainder of the operation being depend,

, the same being in the present instance (though any convenient form maybe used) of cylindrical form, closed at one end, and provided withapertures into whichis fitted a pin, n, on which is mounted one end ofthe connecting-rod o, the other end being connected with IOO the crankM. This piston has aregular u-p, f

.and-down movement in accordance with'the movement of the crank. Y Theletterp designates the charging-piston,

Ythe same being constructed like the power-` piston, and itsconnecting-rod q,pivotal1y con` nected at its lower end with a link, r,by a bolts, (seen more clearly in Fig.. 2,) which in turn is pivoted tothe frame E. To the connecting-bolt s is also fitted the pitman fat oneend and at the other to the crank M. By

I. means of this construction the connecting-rodA q is thrown outof aright line between the crank M, andthe relative movements of the twopistons are as follows: We shall presume that the crank M is at itsupper dead-point, as seen in Fig. 2. \Vhen this is the case, a rightline drawn from the center of the crank to the center of thepower-piston will pass through the axis of the shaft G and that pis- Thecharging-piston, however, will be slightly below its upper dead-point,for its extreme upper limit depends upon the center of the shaft of thecrank and of the bolt s being in line, and this coincidence of centerswill have been passed when the crank has reached the posi- IIO tionshown in Fig. 2; Therefore when the said crank was n that previousposition necessary to' effect this coincidence of centers thecharging-piston was at its higher deadpoint. Later on in the revolutionof the crank it reached the position shown and placed the power-pistonhighest, so that the fact is that the charging-piston reaches its upperdeadpoint before the power-piston reaches its upper deadpoint againduring the time between the moment the charging piston reached saidpoint and the moment the power-piston reached said point the former wasdescending, so that it is also true that the charging-piston begins itsdownstroke before the power-piston begins that stroke. It is also truethat the power-piston begins its ascent before the charging-pistonbegins its ascent, and this is true to such an extent that thepower-piston has just crossed the exhaust-port in its upward movementwhen the charging-piston begins its upward movement. This enables me todischarge the explosive from the charging-cylinder into thepower-cylinder'without the intervention of the usual mixing-chamber.

The letter u designates the shell of the eX- ploding-valve, the samebeing preferably cast with the main cylinder-head, and is provided witha passage, t, which establishes communication between the interior ofthe power: cylinder and the ports of the slide w. This slide workssmoothly within the shell a, and has an interior conical recess, z, fromwhich extend the ports 1 and 2, the former from the 'apex and the lattersome distance below it.

This slide is actuated to and fro by means of the stem 3 and the arm K,the link L, and the eccentric and shaft .I and G, in the manner alreadydescribed, so as to bring the ports 1 and 2, respectively andalternately, opposite the v"passa-ge u when the eccentric J is in itslowest and highest positions, respectively. Vhen the eccentric is in itslowest position, the explosive, which has previously entered conicalopening z, will pass laterally out of the transverse lower port, 4, asshown in Fig. 6, and issue to the flame 5 and become ignited, theignition following up into the conical opening, and as the eccentric,being in motion all the while, elevatcs the slide into the shell u thecontained flame will ignite the explosive in the cylinder N through theport 1, and thus actuate the engine by the resulting explosion actingupon the piston m.

As this occurs the slide will continue on up and the port 2 be presentlypresented opposite the passage fr, when the conical opening z will againbecome filled with the explosive, this latter, however, being delayeduntil the cam I shall have operated the mixing or inlet valve andadmitted a charge of the explosive in the manner already stated.

From these remarks it will appear that the operation of the severalparts of the engine is synchronous, and also that the position of thethrow of the cam I and the eccentric .I with Vrespect to each other issuch that the charge will be admitted at such intervals as to cause asupply to be in the powercylinder in waiting for or at the time of thearrival of the ports 1 and 2, alternately, of the explodingvalveopposite the passage t, so as to maintain a regular and constant actionof the engine. Now, to go back to the ilame 5, it is to be observed thatthe carbureted air is taken from the tank A by the pump 6, actuated bythe arm K, and conducted thence through the pipe 7 to the burner 8, thespace between the upper and lower portions of which containing the lowerpart of the :dame and preventing it from being entirely blown out shouldthe violent issue of the explosive from the port 4 put out the upperpart thereof. The pump 9, which is also actuated by the arm K, forces asupply of water to the waterspace about the power-cylinder through thedelivery and supply pipes 10 and 11, the water escaping from the spaceby asuitable opening.

In Fig. 5 I have represented a view of the mixingvalve, showing therelative position of the ports a with respect to the port V and itsannular space, and the ports b with respect to the port Yand its annularspace, atmospheric air being admitted through the former and theilluminating-gas through the latter, a pipe, 12, being employed toconduct the gas from the source of supply. This position of the valvesadmits of the proper proportions of air and gas to constitute, whenunited and ignited, an explosive. From this it will be understood thatthe mixingvalve acts in that capacity when atmospheric air andilluminating-gas are used as the explosive, and that it also acts inthat capacity when the air, after having been drawn through thegasoline, is found to be too pregnant of the attributes of the gasoline,upon the happening whereof the cut-ofi" \V is adjusted to admit of theinflux of atmospheric air through the ports a and the port V, tocounteract this condition of the carbureted air. When, however, thelatter is found to be properly enriched for the purpose in view, whichwill seldom happen otherwise, then the said valve acts in the capacityof an inlet-valve merely.

I contemplate hereafter applying for Letters Patent on the method ofgenerating and conducting the explosive agent as described in thispresent application.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a gas-engine, the combination, with a charging-cylinder providedwith a piston, an inletvalve, and a check-valve, of a powercylinder indirect communication with the charging-cylinder, save by a valve betweenthe two, and having a piston and an exploding or igniting valve, meansto operate the said inlet and exploding valve, and a crank-shaft withwhich the pistons connect, and suitable machinery to cause one of thepistons to reach IOO IIS

its upper dead-point and begin its return by ing therefrom, and anexplosive generating-V tank in communication with themiXing-valve,whereby the explosive is generated by the operation of the engine.

3. In a gas-engine, the combination, `with the power-cylinder, of avalve-shell in direct communication therewith, and a valve fitted withinsaid shell and having an internal conical chamber whose base is belowthe said communicatiomand from which extend a lower igniting-port andtwo upper ports which discharge an ignited portion of the motive agentinto the power-cylinder.

4. In a gas-engine, the com-bination, with the shell of theinletmixing-valve having a plurality of ports, of the cut-off having aplurality of ports, one of which is adapted to register with one of theports of the shell while the other port of the shell is not registeringwith the other port of the cut-off, yet adapted to admit ofcommunication of the respective shell-ports with the respective cutoffports, and an adjustable stop to limit the downward movement of thecut-off.

5. In a gas-engine, the combination, with a charging-cylinder providedwith a piston, an inlet-valve, and a check-valve, and a powercylinder indirect communication with the eharging-cyli'nder,save by a valve betweenthe two, and having a piston and an explodingvalve, of thegenerating-tank in communication with the inlet-Valve, whereby theexplosive is generated by the operation of the engine and directlyintroduced from the charging -cylinder into the power cylinder, andthence caught up by the exploding-valve, ignited without, and the iiamecarried back into contact with the charge in the power-cylinder.

6. In a gas-engine, the combination, with the power-cylinder and theexploding-valve, whose shell communicates with'the same and whose slidehas a stem, o1" the arm pivotally connected at one end and mounted uponan eccentric, the pump having its piston connected with the other endofthe arm, and the supplypipe leading from thc pump to near the Valve.

`7. In a gas-engine, the combination, with the power-cylinder, of ashellhaving an opening communicating withit,and a slide having an internalopening communicating with a transverse port and with other ports whichcommunicate alternately with the power-cylinder through the shell-port,the said transverse port being adapted to communicate with the flamewhen the slide is down.

8. In a gas-engine, the combination, with an explosive-generating tank,a pump in communication therewith, and means to actuate the pump, of apipe-burner and an explodingvalve located in proximity to each other,and a pipe leading from the pump to the burner, and a iiaine establishednear the said valve.

9. In a gas-engine, the combination, with the generating-tank, the pumpcommunicating therewith, the arm, the shaft and eccentric which actuatethe arm, and t-he pivotal connection at the upper end of the arm, of thepipe` leading from the pump to near the exploding-valve.

-l0. lIn a gas-engine, the combination, with the shaft having aneccentric, and a pivoted arm mounted upon the eccentric, of the pumpcommunicating with the water-space about the cylinder and actuated bythe said arm.

Y 11. In a gas-engine, the combination, with the crank, of the pistonand connecting-rods, one of said rods having a joint between its pistonend and the crank, and a link or device to'throw said joint out of astraight line drawn between the crank-shaft center and the pistoncenter,whereby one of the pistons reaches its upper dead-point and begins toreturn by the time the other piston reaches its upper dead-point.

l2. In a gas-engine, the combination, with a lcharging and powercylinder, of a piston in each and their connecting-rods, one of saidrods having a joint between its piston end and theerank and a link ordevice to throw said joint out of astraight line drawn from thecrank-shaft center to the piston-center, whereby one of the pistons iscaused to commence its upward stroke and allowed to pass theexhaust-port by the time the other of said pistons begins its upwardstroke.

In testimony whereof I affix my signature in presence of two witnesses.

CLARK SINTZ.

Vitnesses:

GaAs/E STEWART, A. A. YEATMAN.

IOO

